Cost-effectiveness of a Community-based Hypertension Improvement Project (ComHIP) in Ghana: results from a modelling study.

OBJECTIVE: To undertake a cost-effectiveness analysis of a Community-based Hypertension Improvement Project (ComHIP) compared with standard hypertension care in Ghana. DESIGN: Cost-effectiveness analysis using a Markov model. SETTING: Lower Manya Krobo, Eastern Region, Ghana. INTERVENTION: We evaluated ComHIP, an intervention with multiple components, including: community-based education on cardiovascular disease (CVD) risk factors and healthy lifestyles; community-based screening and monitoring of blood pressure by licensed chemical sellers and CVD nurses; community-based diagnosis, treatment, counselling, follow-up and referral of hypertension patients by CVD nurses; telemedicine consultation by CVD nurses and referral of patients with severe hypertension and/or organ damage to a physician; information and communication technologies messages for healthy lifestyles, treatment adherence support and treatment refill reminders for hypertension patients; Commcare, a cloud-based health records system linked to short-message service (SMS)/voice messaging for treatment adherence, reminders and health messaging. ComHIP was evaluated under two scale-up scenarios: (1) ComHIP as currently implemented with support from international partners and (2) ComHIP under full local implementation. MAIN OUTCOME MEASURES: Incremental cost per disability-adjusted life-year (DALY) averted from a societal perspective over a time horizon of 10 years. RESULTS: ComHIP is unlikely to be a cost-effective intervention, with current ComHIP implementation and ComHIP under full local implementation costing on average US$12 189 and US$6530 per DALY averted, respectively. Results were robust to uncertainty analyses around model parameters. CONCLUSIONS: High overhead costs and high patient costs in ComHIP suggest that the societal costs of ensuring appropriate hypertension care are high and may not produce sufficient impact to achieve cost-effective implementation. However, these results are limited by the evidence quality of the effectiveness estimates, which comes from observational data rather than from randomised controlled study design.

'What the herbal medicine can do for me in a week, the orthodox does in a year': Perceived efficacy of local alternative therapies influences medication adherence in patients with atherosclerotic cardiovascular disease.

BACKGROUND: There is strong evidence that anti-platelet therapy, ACE inhibitors, beta-blockers and statins are cost-effective in reducing subsequent cardiovascular disease (CVD) events in patients with atherosclerotic cardiovascular disease (ACVD). In some settings, only a low proportion of people have access to these medications, and even lower adhere to them. The current study explored and presents data on the causes of poor adherence to orthodox medication and motivations for alternative therapies in patients with established atherosclerotic cardiovascular disease (ACVD). METHODS: The study was conducted among city-dwelling adults with ACVD in Accra - Ghana's capital city. Eighteen interviews were conducted with patients with established ACVD. A follow-up focus group discussion was conducted with some of them. The protocol was approved by two ethics review committees based in Ghana and in the United Kingdom. All participants were interviewed after informed consent. Analysis was done with the Nvivo qualitative data analysis software. RESULTS: We identified motivations for use of alternatives to orthodox therapies. These cover the five dimensions of adherence: social and economic, health-care system, condition-related, therapy-related, and patient-related dimensions. Perceived inability of an orthodox medication to provide immediate benefit is an important motivator for use of alternative forms of medication. CONCLUSIONS: A multiplicity of factors precipitate non-adherence to orthodox therapies. Perceived efficacy and easy access to local alternative therapies such as herbal and faith-based therapies are important motivators.

Barriers and facilitators to the implementation of a community-based hypertension improvement project in Ghana: a qualitative study of ComHIP.

BACKGROUND: Globally, hypertension is a leading cause of cardiovascular disease and mortality, with the majority of deaths occurring in low- and middle-income countries. Because the burden of hypertension is increasing in low resource settings with restricted infrastructure, it is imperative that new models for hypertension care are realised. One such model is the Community-based Hypertension Improvement Project (ComHIP) which employs a community-based method of task-shifting for managing hypertension. This study is a qualitative analysis of the barriers and facilitators of the main components of ComHIP. METHODS: We purposively selected 55 informants for semi-structured interviews or focus group discussions, which were carried out bythree trained local researchers in Krobo, Twi or English. Informants included patients enrolled in ComHIP, health care providers and Licensed Chemical Sellers trained by ComHIP, and Ghana Health Service employees. Data were analysed using a multi-step thematic analysis. RESULTS: While results of the effectiveness of the intervention are pending, overall, patients and nurses reported positive experiences within ComHIP, and found that it helped enable them to manage their hypertension. Healthcare providers appreciated the additional training, but had some gaps in their knowledge. Ghana Health Service employees were cautiously optimistic about the programme, but expressed some worries about the sustainability of the programme. Many informants expressed concerns over the inability of community nurses and workers to dispense anti-hypertensives, due to legal restrictions. CONCLUSIONS: The WHO recommends task-sharing as a technique for managing chronic conditions such as hypertension in resource constrained settings. ComHIP presents an example of a task-sharing programme with a high level of acceptability to all participants. Going forward, we recommend greater levels of communication and dialogue to allow community-based health workers to be allowed to dispense anti-hypertensives.

Health system challenges to hypertension and related non-communicable diseases prevention and treatment: perspectives from Ghanaian stakeholders.

BACKGROUND: Hypertension, itself a cardiovascular condition, is a significant risk factor for other cardiovascular diseases. Hypertension is recognized as a major public health challenge in Ghana. Beginning in 2014, a collaborative team launched the community-based hypertension improvement program (ComHIP) in one health district in Ghana. The ComHIP project, a public-private partnership, tests a community-based model that engages the private sector and utilizes information and communication technology (ICT) to control hypertension. This paper, focuses on the various challenges associated with managing hypertension in Ghana, as reported by ComHIP stakeholders. METHODS: A total of 55 informants - comprising patients, health care professionals, licensed chemical sellers (LCS), national and sub-national policymakers - were purposively selected for interview and focus group discussions (FGDs). Interviews were audio-recorded and transcribed verbatim. Where applicable, transcriptions were translated directly from local language to English. The data were then analysed using two-step thematic analysis. The protocol was approved by the two ethics review committees based in Ghana and the third, based in the United Kingdom. All participants were interviewed after giving informed consent. RESULTS: Our data have implications for the on-going implementation of ComHIP, especially the importance of policy maker buy-in, and the benefits, as well as drawbacks, of the program to different stakeholders. While our data show that the ComHIP initiative is acceptable to patients and healthcare providers - increasing providers' knowledge on hypertension and patients' awareness of same- there were implementation challenges identified by both patients and providers. Policy level challenges relate to task-sharing bottlenecks, which precluded nurses from prescribing or dispensing antihypertensives, and LCS from stocking same. Medication adherence and the phenomenon of medical pluralism in Ghana were identified challenges. The perspectives from the national level stakeholders enable elucidation of whole of health system challenges to ComHIP and similarly designed programmes. CONCLUSIONS: This paper sheds important light on the patient/individual, and system level challenges to hypertension and related non-communicable disease prevention and treatment in Ghana. The data show that although the ComHIP initiative is acceptable to patients and healthcare providers, policy level task-sharing bottlenecks preclude optimal implementation of ComHIP.

Improving Hypertension Outcome Measurement in Low- and Middle-Income Countries.

High blood pressure is the leading modifiable risk factor for mortality, accounting for nearly 1 in 5 deaths worldwide and 1 in 11 in low-income countries. Hypertension control remains a challenge, especially in low-resource settings. One approach to improvement is the prioritization of patient-centered care. However, consensus on the outcomes that matter most to patients is lacking. We aimed to define a standard set of patient-centered outcomes for evaluating hypertension management in low- and middle-income countries. The International Consortium for Health Outcomes Measurement convened a Working Group of 18 experts and patients representing 15 countries. We used a modified Delphi process to reach consensus on a set of outcomes, case-mix variables, and a timeline to guide data collection. Literature reviews, patient interviews, a patient validation survey, and an open review by hypertension experts informed the set. The set contains 18 clinical and patient-reported outcomes that reflect patient priorities and evidence-based hypertension management and case-mix variables to allow comparisons between providers. The domains included are hypertension control, cardiovascular complications, health-related quality of life, financial burden of care, medication burden, satisfaction with care, health literacy, and health behaviors. We present a core list of outcomes for evaluating hypertension care. They account for the unique challenges healthcare providers and patients face in low- and middle-income countries, yet are relevant to all settings. We believe that it is a vital step toward international benchmarking in hypertension care and, ultimately, value-based hypertension management.

Can a nurse-led community-based model of hypertension care improve hypertension control in Ghana? Results from the ComHIP cohort study.

OBJECTIVES: To evaluate the effectiveness of the Community-based Hypertension Improvement Project (ComHIP) in increasing hypertension control. SETTING: Lower Manya Krobo, Eastern Region, Ghana. PARTICIPANTS: All adult hypertensive community members, except pregnant women, were eligible for inclusion in the study. We enrolled 1339 participants, 69% of whom were female. A total of 552 had a 6-month visit, and 338 had a 12-month visit. INTERVENTIONS: We report on a package of interventions where community-based cardiovascular disease (CVD) nurses were trained by FHI 360. CVD nurses confirmed diagnoses of known hypertensives and newly screened individuals. Participants were treated according to the clinical guidelines established through the project's Technical Steering Committee. Patients received three types of reminder and adherence messages. We used CommCare, a cloud-based system, as a case management and referral tool. PRIMARY OUTCOME: Hypertension control defined as blood pressure (BP) under 140/90 mm Hg. SECONDARY OUTCOMES: changes in BP and knowledge of risk factors for hypertension. RESULTS: After 1 year of intervention, 72% (95% CI: 67% to 77%) of participants had their hypertension under control. Systolic BP was reduced by 12.2 mm Hg (95% CI: 14.4 to 10.1) and diastolic BP by 7.5 mm Hg (95% CI: 9.9 to 6.1). Due to low retention, we were unable to look at knowledge of risk factors. Factors associated with remaining in the programme for 12 months included education, older age, hypertension under control at enrolment and enrolment date. The majority of patients who remained in the programme were on treatment, with two-thirds taking at least two medications. CONCLUSIONS: Patients retained in ComHIP had increased BP control. However, high loss to follow-up limits potential public health impact of these types of programmes. To minimise the impact of externalities, programmes should include standard procedures and backup systems to maximise the possibility that patients stay in the programme.

Best practices in scaling digital health in low and middle income countries.

Healthcare challenges in low and middle income countries (LMICs) have been the focus of many digital initiatives that have aimed to improve both access to healthcare and the quality of healthcare delivery. Moving beyond the initial phase of piloting and experimentation, these initiatives are now more clearly focused on the need for effective scaling and integration to provide sustainable benefit to healthcare systems.Based on real-life case studies of scaling digital health in LMICs, five key focus areas have been identified as being critical for success. Firstly, the intrinsic characteristics of the programme or initiative must offer tangible benefits to address an unmet need, with end-user input from the outset. Secondly, all stakeholders must be engaged, trained and motivated to implement a new initiative, and thirdly, the technical profile of the initiative should be driven by simplicity, interoperability and adaptability. The fourth focus area is the policy environment in which the digital healthcare initiative is intended to function, where alignment with broader healthcare policy is essential, as is sustainable funding that will support long-term growth, including private sector funding where appropriate. Finally, the extrinsic ecosystem should be considered, including the presence of the appropriate infrastructure to support the use of digital initiatives at scale.At the global level, collaborative efforts towards a less-siloed approach to scaling and integrating digital health may provide the necessary leadership to enable innovative solutions to reach healthcare workers and patients in LMICs. This review provides insights into best practice for scaling digital health initiatives in LMICs derived from practical experience in real-life case studies, discussing how these may influence the development and implementation of health programmes in the future.

The economic burden of cardiovascular disease and hypertension in low- and middle-income countries: a systematic review.

BACKGROUND: The evidence on the economic burden of cardiovascular disease (CVD) in low- and middle- income countries (LMICs) remains scarce. We conducted a comprehensive systematic review to establish the magnitude and knowledge gaps in relation to the economic burden of CVD and hypertension on households, health systems and the society. METHODS: We included studies using primary or secondary data to produce original economic estimates of the impact of CVD. We searched sixteen electronic databases from 1990 onwards without language restrictions. We appraised the quality of included studies using a seven-question assessment tool. RESULTS: Eighty-three studies met the inclusion criteria, most of which were single centre retrospective cost studies conducted in secondary care settings. Studies in China, Brazil, India and Mexico contributed together 50% of the total number of economic estimates identified. The quality of the included studies was generally low. Reporting transparency, particularly for cost data sources and results, was poor. The costs per episode for hypertension and generic CVD were fairly homogeneous across studies; ranging between $500 and $1500. In contrast, for coronary heart disease (CHD) and stroke cost estimates were generally higher and more heterogeneous, with several estimates in excess of $5000 per episode. The economic perspective and scope of the study appeared to impact cost estimates for hypertension and generic CVD considerably less than estimates for stroke and CHD. Most studies reported monthly costs for hypertension treatment around $22. Average monthly treatment costs for stroke and CHD ranged between $300 and $1000, however variability across estimates was high. In most LMICs both the annual cost of care and the cost of an acute episode exceed many times the total health expenditure per capita. CONCLUSIONS: The existing evidence on the economic burden of CVD in LMICs does not appear aligned with policy priorities in terms of research volume, pathologies studied and methodological quality. Not only is more economic research needed to fill the existing gaps, but research quality needs to be drastically improved. More broadly, national-level studies with appropriate sample sizes and adequate incorporation of indirect costs need to replace small-scale, institutional, retrospective cost studies.

Evaluation of a community-based hypertension improvement program (ComHIP) in Ghana: data from a baseline survey.

BACKGROUND: Ghana faces an increasing burden of non-communicable disease with rates of hypertension estimated as high as 36% in adults. Despite these high rates, hypertension control remains very poor in Ghana (4%). The current project aims to implement and evaluate a community-based programme to raise awareness, and to improve treatment and control of hypertension in the Eastern Region of Ghana. In this paper, we present the findings of the baseline cross-sectional survey focusing on hypertension prevalence, awareness, treatment, and control. METHODS: To evaluate the ComHIP project, a quasi-experimental design consisted of a before and after evaluations are being implemented in the intervention and comparison districts. A cohort study component is being implemented in the intervention district to assess hypertension control. Background anthropometric and clinical data collected as part of the baseline survey were analyzed in STATA Version 11. We examined the characteristics of individuals, associated with the baseline study outcomes using logistic regression models. RESULTS: We interviewed 2400 respondents (1200 each from the comparison and intervention districts), although final sample sizes after data cleaning were 1170 participants in the comparison district and 1167 in the intervention district. With the exception of ethnicity, the control and intervention districts compare favorably. Overall 32.4% of the study respondents were hypertensive (31.4% in the control site; and 33.4% in the intervention site); 46.2% of hypertensive individuals were aware of a previous diagnosis of hypertension (44.7% in the control site, and 47.7% in the intervention site), and only around 9% of these were being treated in either arm. Hypertension control was 1.3% overall (0.5% in the comparison site, and 2.1% in the intervention site). Age was a predictor of having hypertension, and so was increasing body mass index (BMI), waist, and hip circumferences. After adjusting for age, the risk factors with the greatest association with hypertension were being overweight (aOR = 2.30; 95% CI 1.53-3.46) or obese (aOR = 3.61; 95% CI 2.37-5.51). Older individuals were more likely to be aware of their hypertension status than younger people. After adjusting for age people with a family history of hypertension or CVD, or having an unhealthy waist hip ratio, were more likely to be aware of their hypertension status. CONCLUSIONS: The high burden of hypertension among the studied population, coupled with high awareness, yet very low level of hypertension treatment and control requires in-depth investigation of the bottlenecks to treatment and control. The low hypertension treatment and control rates despite current and previous general educational programs particularly in the intervention district, may suggest that such programs are not necessarily impactful on the health of the population.

Innovating healthcare delivery to address noncommunicable diseases in low-income settings: the example of hypertension.

London Dialogue event, The Hospital Club, 24 Endell St, London, WC2H 9HQ, London, UK, 1 December 2015 Hypertension is a global health issue causing almost 10 million deaths annually, with a disproportionate number occurring in low- and middle-income countries. The condition can be managed effectively, but there is a need for innovation in healthcare delivery to alleviate its burden. This paper presents a number of innovative delivery models from a number of different countries, including Kenya, Ghana, Barbados and India. These models were presented at the London Dialogue event, which was cohosted by the Novartis Foundation and the London School of Hygiene & Tropical Medicine Centre for Global Noncommunicable Diseases on 1 December 2015. It is argued that these models are applicable not only to hypertension, but provide valuable lessons to address other noncommunicable diseases.

Global prevention and control of NCDs: Limitations of the standard approach.

The five-target '25 × 25' strategy for tackling the emerging global epidemic of non-communicable diseases (NCDs) focuses on four diseases (CVD, diabetes, cancer, and chronic respiratory disease), four risk factors (tobacco, diet and physical activity, dietary salt, and alcohol), and one cardiovascular preventive drug treatment. The goal is to decrease mortality from NCDs by 25 per cent by the year 2025. The 'standard approach' to the '25 × 25' strategy has the benefit of simplicity, but also has major weaknesses. These include lack of recognition of: (i) the fundamental drivers of the NCD epidemic; (ii) the 'missing NCDs', which are major causes of morbidity; (iii) the 'missing causes' and the 'causes of the causes'; and (iv) the role of health care and the need for integration of interventions.

Towards a comprehensive global approach to prevention and control of NCDs.

BACKGROUND: The "25×25" strategy to tackle the global challenge of non-communicable diseases takes a traditional approach, concentrating on a few diseases and their immediate risk factors. DISCUSSION: We propose elements of a comprehensive strategy to address NCDs that takes account of the evolving social, economic, environmental and health care contexts, while developing mechanisms to respond effectively to local patterns of disease. Principles that underpin the comprehensive strategy include: (a) a balance between measures that address health at the individual and population level; (b) the need to identify evidence-based feasible and effective approaches tailored to low and middle income countries rather than exporting questionable strategies developed in high income countries; (c) developing primary health care as a universal framework to support prevention and treatment; (d) ensuring the ability to respond in real time to the complex adaptive behaviours of the global food, tobacco, alcohol and transport industries; (e) integrating evidence-based, cost-effective, and affordable approaches within the post-2015 sustainable development agenda; (f) determination of a set of priorities based on the NCD burden within each country, taking account of what it can afford, including the level of available development assistance; and (g) change from a universal "one-size fits all" approach of relatively simple prevention oriented approaches to more comprehensive multi-sectoral and development-oriented approaches which address both health systems and the determinants of NCD risk factors. SUMMARY: The 25×25 is approach is absolutely necessary but insufficient to tackle the the NCD disease burden of mortality and morbidity. A more comprehensive approach is recommended.

Normal CD4+ T lymphocyte levels in HIV seronegative individuals in the Manya/Yilo Krobo communities in the Eastern region of Ghana.

The goal of this study was to determine the normal levels of CD4+ T lymphocytes in healthy individuals who were HIV seronegative in the Manya and Yilo Krobo Districts of Ghana's Eastern Region. This enabled comparisons with normal CD4 count ranges established by the World Health Organization (WHO). The study population consisted of 249 HIV-seronegative clients from a mobile free Voluntary Counseling and Testing (VCT) service in communities of the two districts during a one-month period. The mean CD4 count of these individuals was 1067 cells/microl with women demonstrating higher baseline CD4 counts than men. This study found a WHO comparable HIV seronegative baseline CD4 count as well as gender-based differences in the CD4 count and CD4/CD8 ratio. Establishment of the adult baseline for the country provides important demographic data and indicates the appropriateness of current global treatment guidelines with regards to CD4 levels in Ghana.